Steam boiler



P. TRAINOR STEAM BOILER Filed Oct. 24, 1923 n ooQooawoo m A? ooooooooo \m\ onooooo flWI-:NTOR 02M IMM ATTORNEYS Patented Feb. 19, 1929.

UNITED STATES PATRICK TBAINOB, OF BELL HARBOR, NEW YORK.

STEAM BOILEB.,

Application led October 24, 1923. Serial No. 670,472.

This invention relates to improvements in steam boilers such, for instance, as those em,- ployed for the purpose of heating dwellings and the like. y

An object of the invention is to provide an apparatus of this character which is economical in operation and so arranged and constructed as to promote great rapidity in the generation of steam.

Another object consists in providing such an apparatus which is arranged and constructed so as to enable rapid circulation of the water.

Another object consists in providing such an apparatus which is built in sections so that it may be quickly dis-assembled for cleaning or repairs.

A further object consists in providing such an apparatus which includes improvements in the form, construction and arrangement of the several parts, whereby the above named and other objects may be effectively attained.

A practical embodiment of the invention is represented in the accompanying drawings, in which y Fig. 1 represents a vertical central section of the preferred form.

Fig. 2 represents an end view of the same, partly broken away.

The preferred form of apparatus is shown as adapted for use in connection with a gas heater of conventional form, which latter is represented generally by 1, 2.

The base portion of the apparatus which also constitutes, in effect, a tire-pot for the gas burner, consists of a casting that has a ottom portion 3 and uprising end portions 4, 5. Side plates 6, 7 are secured in position by cap screws 8, 9, so as to complete the boxlike formation of this base portion.

The upper edges of the parts 4, 5 have laterally projecting flanges 10, 11 which are adapted to support a pair of upright water legs or containers 12, 13. The said legs 12, 13 ma be secured to the flanges 10, 11 in any suitab e manner. Each of the legs preferabl consists of wrought steel and is slightly wirlbr at the bottom than at the top; the arrangement being such that the outer wall of each leg is vertical while the inner wall thereof is inclined slightly so as to flare outwardly away from the vertical axis of the apparatus.

A pair of side plates 14, 15 are secured by plates 18, 19 are fitted to abut the saidplates t 14, 15, and are provided with ears 20, 21 which are fastened by bolts 22, 23 to t-he side plates 14, 15 and 6, 7 so as to removably hold the parts in assembly.

The side plates 14, 15 are preferably faced with asbestos, as indicated at 24, 25, and the spaces between the water legs 12, 13 and end plates 18, 19 are filled with asbestos packing 26, 27. Similar' packing 28, 29 may be inserted between the parts 4, 5 and the plates 6,

A multiplicity of inwardly projecting tubes 30, 31 are threaded into the inner Walls of the water legs 12, 13 respectively and, as these tubes project at right angles from the said walls.y it will be observed that their inner ends are slightly higher than their outer ends. The said inner ends are closed, as will clearly be seen by reference to Fig. 1, while t-he outer ends are open so as to have communication with the interiors of the water legs 12, 13, and this upwardly slanting arrangement of thesaid tubes 30, 31 tends to promote the circulation through the boiler. The said tubes may preferably be arranged in staggered relationship, as clearly shown in Fig. 2.

A pair of supports 32, 33 are fastened in any suitable manner on top of the water legs 12, 13, and are shaped to receive and support y a drum 34.

Stub pipes 35, 36 project from the lower end portions of the drum 34 and are connected by suitable elbows 37, 38, through the intermediation of unions, with pipes 39, 40, that extend downwardly and are connected by unions with three way elbows 41, 42.

Stub pipes 43, 44 connect one outlet of each of said elbows with the interiors of the water legs 12, 13 at the bottoms thereof; and the other outlet of each of said elbows is connected by pipes 45, 46 with a cross pipe 47, into the center of which is fitted a three Way elbow 48 that has its lateral opening communicating with a pipe 49 which serves as the return water inlet. Suitable unions 50, "51 are inserted between the elbows 41, 42 and pipes 43, 44.

The drum 34 also communicates at one side with a large stub pipe 52 that connects with a three way elbow 53 which communicates with pipes 54, 55 that are threaded into elbows 56, 57 which receive short pipes 58, 59 that enter elbows 60, 61 which are threaded to pipes 62, 63 that are threaded into and communicate with the water legs 12, 13. Unions 64, 65 are inserted between the pipes 54, 55 and elbows 56, 57. It will be observed that the pipe 52 is relatively large in size, so that its cross sectional area equals the combined cross sectional areas of the pipes 54, 55.

A suitable water inlet pipe 66 opens into the drum 34, as indicated at 67; a suitable steam `outlet pipe 68 projects from the said drum; as indicated at 69; and a suitable safety valve 7 0 is tappe-d into the drum at 71.

The side plates 14, 15 and end plates 18, 19 project sufficiently high so as to house the drum 34, and the side plates are provided at their top, adjacent the end plate 19, with a iiue 72 for the escaping products of combustion.

A suitable water column, which is of conventional form, and is therefore generally represented by 73, is connected at one end to the pipe that carries the safety valve 70, and at the other end with the water leg 12 near the bottom thereof.

In operation, water may be supplied through the pipe 66 to the open parts of the apparatus in the usual manner. After the flame is turned on, it will act directly upon the water legs 12, 13 as well as the tubes 30, 31 projecting inwardly and upwardly there.L from. The heat will pass up between and around the said tubes and engage the bottom and sides of the drum 34, after which it will pass out through the iiue 72. This will quickly heat the water in the apparatus and cause rapid circulation throughout the parts. The steam generated in the drum 34 will pass out through the pipe 68 to be usefully employed as, for instance, in radiators; and the return water from the latter will come down and enter the pipe 49.

It will be observed that the apparatus is so constructed as to be very compact and to provide a large heating surface adapted for intimate contact with the heating medium. Furthermore, the sectional. construction of the apparatus greatly facilitates its erection, cleaning and repair.

It will be understood that various changes may be resorted to in the form, construction and arrangement of the several parts without departing from the spirit and scope of my invention, and hence I do not intend to be limited to the details herein shown and described, except as they may be included in the claims.

nection with the bottom and larger end of the space in the section.

2. An apparatus of the character described comprising, a plurality of rectangular vertically disposed hollow sections arranged in opposite relation, each of said sections having a space therein diminishing from the bottom to the top thereof, closed ended tubes secured substantially at right angles to the inner wall of each section, said tubes being arranged to extend inwardly and upwardly in open communication with the space in the section, and a steam drum having a connection with the top and smaller end ofthe space in each section and a separate connection with the bottom and larger end of the space in each section.

3. An apparatus of the character described comprising. a rectangular vertically disposed hollow section having a vertical outer wall and an inner wall inclined outwardly toward the 'top to provide a space therein diminishin from the bottom to the top thereof, closed ended tubes secured at right angles to said inclined inner wall, and a steam drum havin a connection with the top and smaller end of the space in the section and a separate connection with the bottom and larger end of the space in the section.

4. An apparatus of the character described comprising, a plurality of rectangular vertically disposed hollow sections arranged in opposite relation, each of said sections having a vertical outer wall and an inner wall inclined outwardly toward the top to provide a space therein diminishing from the bottom to the top thereof, closed ended tubes secured at right angles to .said inclined inner wall, and a steam drum having a connection with the top and smaller end of the space in each section and a separate connection with the bottom and larger end of the space in each section.

In testimony, that I claim the foregoing as my invention, I have signed my name this 19th day of September, 1923.

PATRICK TRAINOR. 

